== sanity test 60c: unlink file when mds full ============ 16:55:48 (1776200148)
create 5000 files
 - open/close 552 (time 1776200163.91 total 10.02 last 55.07)
 - open/close 1231 (time 1776200173.93 total 20.04 last 67.79)
 - open/close 1935 (time 1776200183.94 total 30.05 last 70.33)
 - open/close 2589 (time 1776200193.94 total 40.05 last 65.38)
 - open/close 3207 (time 1776200203.95 total 50.06 last 61.73)
 - open/close 3774 (time 1776200213.96 total 60.07 last 56.65)
 - open/close 4373 (time 1776200223.97 total 70.08 last 59.85)
total: 5000 open/close in 79.87 seconds: 62.60 ops/second
fail_loc=0x80000137
 - unlinked 0 (time 1776200237 ; total 0 ; last 0)
total: 5000 unlinks in 44 seconds: 113.636360 unlinks/second
fail_loc=0